@class NSMutableDictionary; @protocol DDSBackgroundActivitySchedulerDelegate; @interface DDSBackgroundActivityScheduler : NSObject @property (retain, nonatomic) NSMutableDictionary *schedulerByIdentifier; @property (retain, nonatomic) id<DDSBackgroundActivitySchedulerDelegate> delegate; - (id)init; - (void)cancelActivityWithIdentifier:(id)a0; - (void).cxx_destruct; - (void)scheduleActivityWithIdentifier:(id)a0 interval:(double)a1 tolerance:(double)a2; @end